초록 ▼

wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2 .multidot.day.multi

wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2 .multidot.day.multidot.atm or smaller at the body sidewall thereof, and a production process thereof.

대표청구항 ▼

[ We claim:] [1.] A stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): [ STR 9 ] (b) a melt viscosity, .eta..cndot. as measured at a temperature of the melting point, Tm, of t

[ We claim:] [1.] A stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): [ STR 9 ] (b) a melt viscosity, .eta..cndot. as measured at a temperature of the melting point, Tm, of the polymer+20.degree. C. and a shear rate of 100/sec, of 500-100,000 Pa.multidot.s;(c) a melting point, Tm, of at least 180.degree. C.;(d) a melt enthalpy, .DELTA.Hm, of at least 29 J/g; and(e) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form, rein the proportion of the repeating unit represented by the formula (1) in the polymer is at least 70 weight percent, and wherein the stretch blow molded container has tensile strength, in a circumferential direction, of at least 150 MPa and a carbon dioxide permeability, as measured at a temperature of 23.degree. C. and 80% relative humidity and a thickness of 50 .mu.m, of 300 cc/m.sup.2 .multidot.day.multidot.atm or smaller at a body sidewall thereof.